# SDR YENA2022101101014

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 2022
- Submitted: October 11, 2022
- Operation: Air carrier
- Aircraft: [N975JT](https://openairdocs.org/aircraft/N975JT), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 07520
- Aircraft time: 21,348 hours, 6,975 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: None
- Part number: 321431
- Part serial: 877756
- Condition: Failed
- Location: 11wl-Batt
- Part time: 6,683 hours, 2,134 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2022101101014

## Discrepancy

FLT#70FLL-BOS. 'UPON AIRCRAFT DROPPING GROUND POWER ONLY AFT CABIN CEILING LIGHT ILLUMINATED; REF. L/P PAGES 3526363, 3526364, 3526365 ITEMS #1 AND #2 FOR REMOVAL OF ALL SIX EPSU BATTERIES. OP'S CHECK IS OK AT THIS TIME.  ALL IAW AMM 33-51-38-400-002-A.'REMOVED AND REPLACED EPSU BATTERY AT 11WL IAW AMM 33-51-38. OP'S CHECK OK.'

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